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Table 6 Odds ratio of potential risk factors for development of postoperative upper limb palsy

From: The use of average Pavlov ratio to predict the risk of post operative upper limb palsy after posterior cervical decompression

 

Patient without palsy

(n = 56)

Patient with palsy

(n = 18)

OR

p

Average Pavlov ratio < 0.65

10 (17.9)

8 (44.4)

3.68

0.027

Level of compression in Preoperative MRI (%)

    

   C2/3 (%)

3 (5.4)

1 (5.6)

1.039

0.974

   C3/4 (%)

32 (57.1)

16 (88.9)

6

0.025

   C4/5 (%)

40 (71.4)

16 (88.9)

3.2

0.149

   C5/6 (%)

42 (75.0)

10 (55.6)

0.417

0.122

   C6/7 (%)

25 (44.6)

10 (55.6)

1.55

0.421

   C7/T1 (%)

1 (1.8)

0 (0)

  

3 or more compression levels in MRI (%)

27 (48.2)

13 (72.2)

2.79

0.082

HIA in T2 weighted MRI image (%)

44 (78.6)

11 (61.1)

0.955

0.943